![]() To gain a bit of experience with some of these concepts, let's construct a shopping list on our web page. ![]() This allows one to describe unique decorative elements with the same mechanism that is used to describe the overall uniform look and feel within a entire document or website. The web browser (or user agent) will honor the most recent CSS rule which it has encountered as it scans or reads the web page when it renders a given element. If you do not know what a user's style sheet is or where it might be stored, you may skip reading the remainder of this sentence if you have constructed your own user's style sheet, it may be less confusing for you to disable it for the duration of this tutorial.Īnother aspect of the cascading process is the spatial order of appearance. For simplicity, we will assume that you have not already constructed your own over-riding user's style sheet. But if a user does not create or have their own style sheet, then the author's preference for a smaller font size will overrule the default font size which the browser would have used.įor the large majority of the time while you are working through this tutorial, you will be in the role of creating rules in the author's style sheet. a user with a slight visual impairment to ensure that all text is rendered in a larger font size, even if the author of a website thought it would be cute to use a tiny font size. Rules found in sources at the bottom of this list override rules found earlier in the hierarchy. !important rules in author's style sheet.default rules (initial values) from the web browser (or user agent).CSS provides for a hierarchy of sources of style information: You may wonder why the word cascading is used in Cascading Style Sheets. Second, if you decide that you want to change the look of your site, all that is required is changing the style associated with the site's content, without having to re-do the whole site from scratch. First, there is a much greater chance of your site looking the same no matter which browser it is viewed on. This approach has two distinct advantages. So, content first, then worry about how it looks. CSS may be used to control the visual appearance of your web page both on screen and on paper (should a user choose to print some of your content), as well as in other media. All you really need to know at this point is that HTML handles the content of the site (text, links, images, etc.) and styles determine how that content should be presented. Fortunately BlueGriffon does a lot of this work for you. It is certainly beyond the scope of this tutorial to explain the intricacies of how this works. This standard is called CSS, or Cascading Style Sheets. The solution to this problem was to create a standard for specifying the presentation of HTML that would be the same in all browsers. ![]() Even if someone invested in the extra work of having multiple sets of browser-specific tags which were conditionally included in a file, some web pages were not displayed gracefully, attractively, or as intended in some browsers. Some of these tags were implemented in only one or a few browsers, and some tags which were recognized and implemented by multiple web browsers were rendered in different ways by each browser. In the first decade or less of the use of HTML, some web designers attempted to fine tune the layout, spacing, and other aspects of the appearance of a web page by using various HTML tags. It was not designed for telling a browser how that information should be presented in minute detail. HTML is well suited to setting up links to different pages, images and locations on the net. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |